JupyterLab vulnerable to potential authentication and CSRF tokens leak
Impact
Users of JupyterLab who click on a malicious link may get their Authorization and XSRFToken tokens exposed to a third party when running an older jupyter-server version.
Patches
JupyterLab 4.1.0b2, 4.0.11, and 3.6.7 were patched.
Workarounds
No workaround has been identified, however users should ensure to upgrade jupyter-server to version 2.7.2 or newer which includes a redirect vulnerability fix.
References
Vulnerability reported by user @davwwwx via the bug bounty program sponsored by the European Commission and hosted on the Intigriti platform.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | jupyterlab | >= 4.0.0, < 4.0.11, < 3.6.7 | 4.0.11, 3.6.7 |
| Python (PyPI) | notebook | >= 7.0.0, < 7.0.7 | 7.0.7 |
References
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-44cc-43rp-5947
- https://nvd.nist.gov/vuln/detail/CVE-2024-22421
- https://github.com/jupyterlab/jupyterlab/commit/19bd9b96cb2e77170a67e43121637d0b5619e8c6
- https://github.com/jupyterlab/jupyterlab/commit/1ef7a4fa0202ebdf663e1cc0b45c8813a34a0b96
- https://github.com/jupyterlab/jupyterlab/commit/fccd83dc4441da0384ee3fd1322c3b2d9ad4caaa
- https://github.com/jupyterlab/jupyterlab
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQJKNRDRFMKGVRIYNNN6CKMNJDNYWO2H
- https://pypi.org/project/notebook
- https://github.com/advisories/GHSA-44cc-43rp-5947
- https://pypi.org/project/jupyterlab
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L- Weakness (CWE)
CWE-200- Platform
- Python (PyPI)
- Package
jupyterlab, notebook- Disclosed
- 19.01.2024
- Updated
- 11.10.2026 15:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1706 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2534 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-44cc-43rp-5947 - CC BY 4.0
Vulnerability history: jupyterlab
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 19
- First → latest
- 08.2021 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 8
- Medium 8
- Low 2
Disclosures per year
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 4
- 2025: 1
- 2026: 13
-
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